Difference between revisions of "Calibrations"
Jump to navigation
Jump to search
(→Setup) |
|||
| (3 intermediate revisions by the same user not shown) | |||
| Line 7: | Line 7: | ||
* Clean modules - BOSIMANITE AL-29 followed by ROGYPAL CA-307 Z, bake for 80*C for 18 hours | * Clean modules - BOSIMANITE AL-29 followed by ROGYPAL CA-307 Z, bake for 80*C for 18 hours | ||
* Clean O-rings - Isopropanol | * Clean O-rings - Isopropanol | ||
| − | |||
| − | |||
| − | |||
| − | |||
* Clean sample holder - isopropanol | * Clean sample holder - isopropanol | ||
* Central piece | * Central piece | ||
| Line 26: | Line 22: | ||
===Reassembly=== | ===Reassembly=== | ||
| + | * Put chamber together (check configuration required) | ||
| + | * Reconnect monochromator | ||
| + | * Adjust height to prevent bending of modules during pumping | ||
| + | * Connect securely | ||
* Install temperature sensor | * Install temperature sensor | ||
* Install sample holder with samples | * Install sample holder with samples | ||
| Line 41: | Line 41: | ||
* Take temperature reading | * Take temperature reading | ||
* Take a dark count run with aluminium sample and lamp off | * Take a dark count run with aluminium sample and lamp off | ||
| − | * | + | * Record 10 sets of 10,000 waveforms 12us long (takes around 15 minutes each set) |
* Repeat in the lamp beam with closed slit if possible to test light leakage | * Repeat in the lamp beam with closed slit if possible to test light leakage | ||
* With all SiPMs | * With all SiPMs | ||
Latest revision as of 09:58, 24 November 2022
Calibration checklist
Cleaning
* Clean chamber * Take apart * Clean modules - BOSIMANITE AL-29 followed by ROGYPAL CA-307 Z, bake for 80*C for 18 hours * Clean O-rings - Isopropanol * Clean sample holder - isopropanol * Central piece * Three frames * Three doors * Suspension support * Screws/springs * Clean cooling apparatus - isopropanol * Cooling braids * Screws/springs * Clean base aluminium sample - isopropanol * Clean readout equipment which will be inside chamber (wires) - isopropanol * Clean SiPM holder - isopropanol
Reassembly
* Put chamber together (check configuration required) * Reconnect monochromator * Adjust height to prevent bending of modules during pumping * Connect securely * Install temperature sensor * Install sample holder with samples * Reconnect cooling apparatus * Cooling braids * Screws/springs * Install SiPM holder * Visually test that it is in line * Reconnect readout equipment * Test to make sure all connections are secure * Pull vacuum down to e-3mbar
Setup
* Take temperature reading * Take a dark count run with aluminium sample and lamp off * Record 10 sets of 10,000 waveforms 12us long (takes around 15 minutes each set) * Repeat in the lamp beam with closed slit if possible to test light leakage * With all SiPMs * Measure lamp * Move grating with motor to calibrate motor control * Move grating and measure intensity at each wavelength (in predefined steps) * Compare this to the expected spectrum plus SiPM response * Repeat for all SiPMs * Compare spectra between SiPMs * Sweep SiPMs across the beam (in predefined steps)